Today’s word is تازه‌نفس (tazeh-nafas), which literally means “fresh of breath” and more generally simply “fresh” or It is especially used to describe military forces, and that is how I found it used today in an article on BBC Persian titled: آمریکا ‘صدها سرباز’ تازه نفس به هلمند می‌فرستد (“U.S. sends ‘hundreds’ of fresh soldiers to Helmand”).